Canon imageRUNNER ADVANCE C350 series Service Manual page 382

4
Disassembly/Assembly > Original Exposure/Feed System > Removing the CIS Unit > Preparation
12) Make a fine adjustment of image magnification ratio (vertical scanning direction) at
copyboard reading.
1. Set the image of the test chart upward in Copyboard Glass, and give one sheet of
single-sided copy.
2. Compare the image length of the feed direction of the test chart and the copy of the
test chart.
Carry out the following process when adjustment is necessary.
3. Press ADJ-X-MG from the service mode screen.
LV. COPIER> ADJUST> ADJ-XY
1
4. Input value, and adjust an image.
• When a copied image is enlarged: Increase value
• When a copied image is reduced: Decrease value
• Adjustment unit: 0.1 %
< When a copied image is long >
Test chart Copy of the test chart
A
Feed direction
5. Write the new changed value in the service label.
6. Exit the service mode.
13) Make a copy and check the copied image.
4 Disassembly/Assembly > Original Exposure/Feed System > Removing the CIS Unit > Preparation
ADJ-X-MG
T-4-65
< When a copied image is short >
Copy of the test chart
Test chart
A
Feed direction
F-4-173
Removing the CIS Unit
■ Before Replacing the Scanner Unit (Reader side CIS)
● Preparation before Replacement
1) Backup of the Service Mode data.
Lv. COPIER > FUNCTION > SYSTEM >
2
■ Preparation
1) Remove the Copyboard Glass Unit(Refer to page 4-72).
F-4-174
RSRAMBUP
T-4-66
4-75
4-75